The waste acid from benzol refining is a very complex mass and we has no better method to deal with it for a long time.
精苯废酸组成极为复杂，长期以来对精苯废酸的处理没有合适的解决方法。
The refining method of the propionic acid guanidine of the invention has high refining yield and menstruum can be recovered and applied, thereby greatly reducing waste water quantity.
本发明丙酸胍的精制方法精制收率高，溶媒可回收套用，并大大减少了废水量。
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